On monomorphic topological functors with finite supports

preprint2011arXivOpen access

Abstract

We prove that a monomorphic functor F:Comp→CompF:Comp\to Comp with finite supports is epimorphic, continuous, and its maximal ∅\emptyset-modification F∘F^\circ preserves intersections. This implies that a monomorphic functor F:Comp→CompF:Comp\to Comp of finite degree degF≤ndeg F\le n preserves (finite-dimensional) compact ANR's if the spaces F∅F\emptyset, F∘∅F^\circ\emptyset, and FnFn are finite-dimensional ANR's. This improves a known result of Basmanov.

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